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KMID : 0893320050200040279
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Journal of Environmental Toxicology
2005 Volume.20 No. 4 p.279 ~ p.286
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Risk Assessment of Soil through Earthworm Toxicity Test of Nonylphenol and Bisphenol A
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Lee Chul-Woo
Park Soo-Young
Yoon Jun-Heon
Choi Kyung-Hee
Chung Young-Hee
Kim Hyun-Mi
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Abstract
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Earthworm (Eisenia fetida) acute toxicity test was carried out and ecological risk assessment in soil was performed with national monitoring data. 14 day - of nonylphenol and bisphenol A were 288.1 mg/kg and 90.1 mg/kg, respectively. And NOECs of nonylphenol and bisphenol A were 250 mg/kg and 50 mg/kg, respectively. Significant weight decrement was appeared at 70 mg/kg of bisphenol A, however, nonylphenol at concentrations tested did not severe adverse effect on the weight decrement. The environmental monitoring has been carrying out by NIER since 1999. Exposure levels of nonylphenol in soil were ND10.55 g/kg and those of bisphenol A were ND15.50g/kg in National Monitoring data which had been performed from 2000 to 2004. The measured soil exposure level was applied to evaluate the environmental risk assessment. The values of PNEC for bisphenol A and nonylphenol were determined as 0.5 mg/kg and 2.5 mg/kg, respectively using the safety factors which were suggested in EU and OECD. The values of HQ (PEC/PNEC) were determined to be below I for bisphenol A and nonylphenol when the maximum exposure levels for bispheol A (15.50g/kg) and nonylphenol (10.55g/kg) were applied. Conclusively, the environmental risk assessment of bisphenol A and nonylphenol was not critical in soil.
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KEYWORD
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earthworm, acute toxicity, nonylphenol, bisphenol A, risk assessment
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